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Altimeter and static system test interval for IFR

Aviation Mechanic General (AMG) practice question 7 of 21 on Inspection Concepts and Techniques. ACS element AM.I.K.K4 · difficulty: recall. Want to answer it in a timed quiz? Use the Aviation Mechanic General (AMG) practice mode.

Question bank updated 2026-09-22

QUESTIONAn aircraft is operated in controlled airspace under instrument flight rules (IFR). Within what preceding period must each altimeter and static system have been tested?

  1. A12 calendar months
  2. B24 calendar months
  3. C100 hours of flight time or 12 months
Show the answer and explanation

Correct answer: B. 24 calendar months

  • A — incorrect Twelve calendar months is the annual inspection interval; the altimeter and static system test interval is 24 calendar months.
  • B — correct Aircraft operated in controlled airspace under IFR must have each altimeter and static system tested in accordance with 14 CFR part 43, Appendix E, within the preceding 24 calendar months.
  • C — incorrect The altimeter and static system test is a calendar-based requirement of 24 months; it is not tied to 100 hours of flight time.

BACKGROUND

Aircraft that are operated in controlled airspace under instrument flight rules must have each altimeter and static system tested in accordance with the procedures in 14 CFR part 43, Appendix E, within the preceding 24 calendar months. Aircraft having an air traffic control (ATC) transponder must also have each transponder checked within the preceding 24 months. All these checks must be conducted by appropriately certified individuals.

STUDY TIP

Group the 24-month checks together: altimeter, static system and transponder all share the same 24-calendar-month interval.

KEY POINTS

  • IFR in controlled airspace requires altimeter and static system tests within the preceding 24 calendar months.
  • The procedures are in 14 CFR part 43, Appendix E.
  • ATC transponders are also checked within the preceding 24 months.

SOURCES

  • FAA-H-8083-30B ch10 "Altimeter & Transponder Inspections"
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SkyDrill is not affiliated with the FAA. This is an original practice item based on FAA-H-8083-30B Aviation Maintenance Technician Handbook – General, 14 CFR part 43 and part 65. Regulations and handbooks are revised; confirm details against the current edition.